What is the mean of these results: 8, 10, 12, 14, 16?
Question 2
2.
A student measures the height of a plant on five days: 12 cm, 15 cm, 14 cm, 16 cm, and 13 cm. Calculate the mean height.
Question 3
3.
The mean is calculated by:
Question 4
4.
What is the range of these results: 5, 7, 9, 6, 8?
Question 5
5.
How do you calculate the range of a set of results?
Question 6
6.
A student records temperatures of 12°C, 14°C, 15°C, 16°C, and 13°C. What is the mean temperature?
Question 7
7.
Why is it useful to calculate the mean of a set of results?
Question 8
8.
If one result in a set is much larger or smaller than the others, this is called:
Question 9
9.
A scientist records five measurements: 2.1 g, 2.4 g, 2.3 g, 2.2 g, and 2.5 g. Calculate the range.
Question 10
10.
What does a larger range in a data set suggest?
Question 11
11.
What is an anomaly in a scientific investigation?
Question 12
12.
An anomalous result is:
Question 13
13.
Why should scientists look for anomalies in their data?
Question 14
14.
A student records the following results: 22, 24, 21, 23, 45. Which result is likely to be an anomaly?
Question 15
15.
If an anomaly is identified, a scientist should:
Question 16
16.
How can you tell if a result is anomalous in an experiment?
Question 17
17.
Anomalies in data can be caused by:
Question 18
18.
How should a scientist handle an anomaly in their data?
Question 19
19.
A student measures the mass of five objects: 1.2 g, 1.3 g, 1.4 g, 3.5 g, and 1.3 g. Which value is an anomaly?
Question 20
20.
Why should scientists repeat their experiments?
Question 21
21.
If a scientist repeats an experiment and gets very different results each time, what does this suggest?
Question 22
22.
A scientist records results for the rate of reaction in an experiment. They repeat the experiment three times and get similar results. What does this suggest about their data?
Question 23
23.
If an experiment is repeated multiple times and the results are very similar, this means the experiment is:
Question 24
24.
Which of the following best improves the reliability of an experiment?
Question 25
25.
Why is it important to have reliable data in scientific investigations?